CVSS 3.0
7.5 highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCVE-2019-12312
High (7.5) in libreswan libreswan. EPSS 2.7% chance of exploitation in the next 30 days.
In Libreswan 3.27 an assertion failure can lead to a pluto IKE daemon restart. An attacker can trigger a NULL pointer dereference by initiating an IKEv2 IKE_SA_INIT exchange, followed by a bogus INFORMATIONAL exchange instead of the normallly expected IKE_AUTH exchange. This affects send_v2N_spi_response_from_state() in programs/pluto/ikev2_send.c that will then trigger a NULL pointer dereference leading to a restart of libreswan.
Severity
- EPSS
- 2.7% chance of exploitation in the next 30 days; higher than 86% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-476, CWE-617
- Published
- Modified
- Record from
- the NVD, synced
Affected
- libreswan:libreswan
References
- http://www.iwantacve.cn/index.php/archives/218/
- https://github.com/libreswan/libreswan/compare/9b1394e...3897683
- https://github.com/libreswan/libreswan/issues/246
- https://libreswan.org/security/CVE-2019-12312/CVE-2019-12312.txt
- https://libreswan.org/security/CVE-2019-12312/libreswan-3.27-CVE-2019-12312.patch